<template>
    <view>
        <view class="goods-item">
            <!-- 左侧照片 -->
            <view class="goods-item-left">
                <!-- 添加选择按钮 -->
                <radio :checked='goods.goods_state' color="#d81e06" v-if="showRadio" @click="radioClickHandler"></radio>
                <image :src="goods.goods_small_logo || defaultPic" mode="" class="goods-img"></image>
            </view>
            <!-- 右侧信息 -->
            <view class="goods-item-right">
                <!-- 商品名称 -->
                <view class="goods-name">{{goods.goods_name}}</view>
                <!-- 商品信息 -->
                <view class="goods-info">
                    <view class="goods-price">￥{{goods.goods_price | tofixed}}</view>
                    <!-- 商品数量 -->
                    <uni-number-box :min="1" :value="goods.goods_count" @change="numChangeHandler" v-if="showNum">
                    </uni-number-box>
                </view>
            </view>
        </view>
    </view>
</template>

<script>
    export default {
        name: "my-goods",
        props: {
            // 自定义数据
            goods: {
                type: Object,
                default: {}
            },
            // 是否展示图片左侧的 radio
            showRadio: {
                type: Boolean,
                default: false
            },
            // 是否展示价格右侧的 NumberBox 组件
            showNum: {
                type: Boolean,
                default: false,
            },
        },
        data() {
            return {
                // 替换商品没有图片的情况
                defaultPic: 'https://img3.doubanio.com/f/movie/8dd0c794499fe925ae2ae89ee30cd225750457b4/pics/movie/celebrity-default-medium.png'
            };
        },
        methods: {
            // 点击选择按钮
            radioClickHandler() {
                // 通过 this.$emit() 触发外界通过 @ 绑定的 radio-change 事件，
                // 同时把商品的 Id 和 勾选状态 作为参数传递给 radio-change 事件处理函数
                this.$emit('radio-change', {
                    // 商品的 Id
                    goods_id: this.goods.goods_id,
                    // 商品最新的勾选状态
                    goods_state: !this.goods.goods_state
                })
            },
            // 商品数量累加器
            numChangeHandler(val) {
                // 通过 this.$emit() 触发外界通过 @ 绑定的 num-change 事件
                this.$emit('num-change', {
                    // 商品的 Id
                    goods_id: this.goods.goods_id,
                    // 商品的最新数量
                    goods_count: +val
                })
            }
        },
        filters: {
            tofixed(num) {
                return Number(num).toFixed(2)
            }
        }

    }
</script>

<style lang="scss">
    .goods-item {
        display: flex;
        padding: 10px 5px;
        border-bottom: 1px solid #dfe0d9;
        // 让 goods-item 项占满整个屏幕的宽度
        width: 750rpx;
        // 设置盒模型为 border-box
        box-sizing: border-box;

        .goods-item-left {
            margin-right: 5px;
            display: flex;
            justify-content: space-between;
            align-items: center;

            .goods-img {
                width: 100px;
                height: 100px;
                display: block;
            }

        }

        .goods-item-right {
            padding-left: 10px;
            display: flex;
            flex: 1;
            flex-direction: column;
            justify-content: space-around;

            .goods-name {
                font-size: 14px;
            }

            .goods-info {
                display: flex;
                align-items: center;
                justify-content: space-between;

                .goods-price {
                    font-size: 16px;
                    color: #d81e06;
                }
            }
        }
    }
</style>
